staging:iio: Fix error handling in generic_buffer example
read() does not return -EAGAIN
read() returns -1 and the errno value needs to be checked for -EAGAIN
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/staging/iio/Documentation/generic_buffer.c b/drivers/staging/iio/Documentation/generic_buffer.c
index 40d0eca..044ea19 100644
--- a/drivers/staging/iio/Documentation/generic_buffer.c
+++ b/drivers/staging/iio/Documentation/generic_buffer.c
@@ -305,9 +305,12 @@
read_size = read(fp,
data,
toread*scan_size);
- if (read_size == -EAGAIN) {
- printf("nothing available\n");
- continue;
+ if (read_size < 0) {
+ if (errno == -EAGAIN) {
+ printf("nothing available\n");
+ continue;
+ } else
+ break;
}
for (i = 0; i < read_size/scan_size; i++)
process_scan(data + scan_size*i,